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Rifles, Reloading, Optics, Equipment
Reloading
standard deviation
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<blockquote data-quote="JeffVN" data-source="post: 211343" data-attributes="member: 2261"><p>Without delving too far into the realm of statisitics, standard deviation is a predictive statment (forgive the gross generalization here) about the velocity spread of your particular load. The higher the standard deviation, the higher the predicted velocity spread (again grossly generalized) of your particular load. The tighter the load, the lower the SD; hence the quest for a tight load with low extreme spread and low SD.</p><p></p><p>At long range (especially at 1K and beyond), velocity swings and spreads between shots can have a significant verticle changes at the target end.</p><p></p><p>JeffVN</p></blockquote><p></p>
[QUOTE="JeffVN, post: 211343, member: 2261"] Without delving too far into the realm of statisitics, standard deviation is a predictive statment (forgive the gross generalization here) about the velocity spread of your particular load. The higher the standard deviation, the higher the predicted velocity spread (again grossly generalized) of your particular load. The tighter the load, the lower the SD; hence the quest for a tight load with low extreme spread and low SD. At long range (especially at 1K and beyond), velocity swings and spreads between shots can have a significant verticle changes at the target end. JeffVN [/QUOTE]
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Reloading
standard deviation
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